package com.zijunlin.Zxing.Demo;

import java.io.IOException;
import java.util.Vector;

import android.app.Activity;
import android.content.res.AssetFileDescriptor;
import android.graphics.Bitmap;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Bundle;
import android.os.Handler;
import android.os.Vibrator;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.widget.TextView;
import android.widget.Toast;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.Result;
import com.zijunlin.Zxing.Demo.camera.CameraManager;
import com.zijunlin.Zxing.Demo.decoding.CaptureActivityHandler;
import com.zijunlin.Zxing.Demo.decoding.InactivityTimer;
import com.zijunlin.Zxing.Demo.view.ViewfinderView;

public class CaptureActivity extends Activity implements Callback {

	private CaptureActivityHandler	handler;
	private ViewfinderView			viewfinderView;
	private boolean					hasSurface;
	private Vector<BarcodeFormat>	decodeFormats;
	private String					characterSet;
	private TextView				txtResult;
	private InactivityTimer			inactivityTimer;
	private MediaPlayer				mediaPlayer;
	private boolean					playBeep;
	private static final float		BEEP_VOLUME	= 0.10f;
	private boolean					vibrate;

	private static CaptureListener	listener;

	/** 设置二维码监听器 */
	public static void setListener(CaptureListener listener) {
		CaptureActivity.listener = listener;
	}

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		// ��ʼ�� CameraManager
		CameraManager.init(getApplication());

		viewfinderView = (ViewfinderView) findViewById(R.id.viewfinder_view);
		txtResult = (TextView) findViewById(R.id.txtResult);
		hasSurface = false;
		inactivityTimer = new InactivityTimer(this);

		// Toast.makeText(this, "现在是竖屏模式", 0).show();
	}

	@Override
	protected void onResume() {
		super.onResume();
		SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view);
		SurfaceHolder surfaceHolder = surfaceView.getHolder();
		if (hasSurface) {
			initCamera(surfaceHolder);
		} else {
			surfaceHolder.addCallback(this);
			surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
		}
		decodeFormats = null;
		characterSet = null;

		playBeep = true;
		AudioManager audioService = (AudioManager) getSystemService(AUDIO_SERVICE);
		if (audioService.getRingerMode() != AudioManager.RINGER_MODE_NORMAL) {
			playBeep = false;
		}
		initBeepSound();
		vibrate = true;
	}

	@Override
	protected void onPause() {
		super.onPause();
		if (handler != null) {
			handler.quitSynchronously();
			handler = null;
		}
		CameraManager.get().closeDriver();
	}

	@Override
	protected void onDestroy() {
		inactivityTimer.shutdown();
		super.onDestroy();
	}

	private void initCamera(SurfaceHolder surfaceHolder) {
		try {
			CameraManager.get().openDriver(surfaceHolder);
		} catch (IOException ioe) {
			return;
		} catch (RuntimeException e) {
			return;
		}
		if (handler == null) {
			handler = new CaptureActivityHandler(this, decodeFormats, characterSet);
		}
	}

	@Override
	public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {}

	@Override
	public void surfaceCreated(SurfaceHolder holder) {
		if (!hasSurface) {
			hasSurface = true;
			initCamera(holder);
		}

	}

	@Override
	public void surfaceDestroyed(SurfaceHolder holder) {
		hasSurface = false;

	}

	public ViewfinderView getViewfinderView() {
		return viewfinderView;
	}

	public Handler getHandler() {
		return handler;
	}

	public void drawViewfinder() {
		viewfinderView.drawViewfinder();

	}

	public void handleDecode(Result obj, Bitmap barcode) {
		inactivityTimer.onActivity();
		// viewfinderView.drawResultBitmap(barcode);
		// playBeepSoundAndVibrate();
		// txtResult.setText(obj.getBarcodeFormat().toString() + ":" + obj.getText());

		boolean resume = false;
		if (listener != null) {
			resume = listener.handleDecode(obj, barcode, this);
		}

		if (resume)
			return;
	}

	public void restartPreviewAfterDelay(long delayMS) {
		if (handler != null) {
			handler.sendEmptyMessageDelayed(R.id.restart_preview, delayMS);
		}
	}

	private void initBeepSound() {
		if (playBeep && mediaPlayer == null) {
			// The volume on STREAM_SYSTEM is not adjustable, and users found it
			// too loud,
			// so we now play on the music stream.
			setVolumeControlStream(AudioManager.STREAM_MUSIC);
			mediaPlayer = new MediaPlayer();
			mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
			mediaPlayer.setOnCompletionListener(beepListener);

			AssetFileDescriptor file = getResources().openRawResourceFd(R.raw.beep);
			try {
				mediaPlayer.setDataSource(file.getFileDescriptor(), file.getStartOffset(), file.getLength());
				file.close();
				mediaPlayer.setVolume(BEEP_VOLUME, BEEP_VOLUME);
				mediaPlayer.prepare();
			} catch (IOException e) {
				mediaPlayer = null;
			}
		}
	}

	private static final long	VIBRATE_DURATION	= 200L;

	private void playBeepSoundAndVibrate() {
		if (playBeep && mediaPlayer != null) {
			mediaPlayer.start();
		}
		if (vibrate) {
			Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
			vibrator.vibrate(VIBRATE_DURATION);
		}
	}

	/**
	 * When the beep has finished playing, rewind to queue up another one.
	 */
	private final OnCompletionListener	beepListener	= new OnCompletionListener() {
															public void onCompletion(MediaPlayer mediaPlayer) {
																mediaPlayer.seekTo(0);
															}
														};

	/** 监听二维码 */
	public static interface CaptureListener {
		boolean handleDecode(Result rawResult, Bitmap barcode, Activity activity);
	}

}